The version I heard was:

Her skin was pink light the belly of a mink,
her hair was a mare shit brown,
and her boobs hung loose like the balls of a moose,
Cause she came from an Indian town.

She stood out there in the midnight air
and the wind tore up her nighty
and the moon shone bright on her milk-white tits
and I said Christ almighty.

There's a third verse which, even when I've sung it to people who know it's at a bawdy songs workshop, gets people upset, so I won't put it down here.